Hydraulic expansion chuck
CA 2561922 C · Owner: Herud, Josef Konrad · Inventors: Herud, Josef Konrad
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a hydraulic expansion chuck (1) which has a particularly advantageous , long, narrow design. The tool end (3) of the expansion chuck (1) is equipped with an expansion , bushing (1) that is surrounded by a pressure chamber (12) which can be radially deformed in , order to clamp a tool by means of a hydraulic fluid (F) that is contained in said pressure , chamber (12). A pressure generation unit (14) is situated at an axial distance from the , expansion bushing (10) and a pressure conduction system (13) is provided to transfer pressure , from the pressure generation unit (14) to the pressure chamber (12) said , pressure conduction , system being formed by an …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 22, 2005 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.